All work
Fitness · AI coach
FableFit
In beta testing
A workout tracker with an AI coach that can actually change your plan.
Your plan,
coached.
Log every set. Ask Fable to change anything. It edits the plan for you.
Coming soon to AndroidGood evening
Ready to train?
3/4This week
78.4Weight kg
41Sessions
Suggested for today
Leg day6 exercises · 55 min
GOAsk FableSwap exercises, plan your week
Fable · AI coach
Hack squats hurt my knees. Replace them.
Done. I swapped them for leg press, which keeps the load on your quads with less knee strain.
− Hack squat · 4 × 8
+ Leg press · 4 × 10
✓ Plan updated · Leg day
Message Fable…
Illustrative preview of the product.
Overview
Build a plan from four quick questions, log every set, and track PRs and body stats. Fable, the built-in coach, uses Claude with tool calling: tell it a lift hurts your knees and it swaps the exercise in your plan itself. The server checks every change before it is saved.
What we built
- AI coach that edits your plan, not just chats
- Every AI change validated on the server
- Plan builder, rest timer, history & PRs, body tracker
- In-app subscriptions, light and dark themes
Have a project like this?
Tell us what you want to build. We reply from contact@opusheights.com.